Episcopic projecting apparatus



` .1 of ground glass-or on toa white cloth... able suspension .wit s counteriveiglit ol' tothe accomp'nnyn drawings which ills- 'guido pulleys 13 and 14 und is then 4wound mm Joann: 0 1? suenen Brumes n mm a f :in 'socxnrs'monm orrnmn. IBANcnnJomr-srocx conmormnun. f g

The invention is-ooncerned with ipparaconceutricall to the source 1. These l 'tusf for projecting the image of a" surgical are suitably inclined 'so as to reflectjhe o ration on to :tscreen locatedinsroom whichintersectinXY. Af

a 'oiningthe operating theatreso n s to en.-- juncture shouldbe-locabed theoperetingeld z. ab ein large number of persons to follogr the so as to obtainshadowless illuminntiomu details o f the operation. *v .Since the head orhends ofthe operataonly` j Seid epparatusischarecterizedbythe o 0m obstruct the luminous raysproceeding from b ination of a lighting apparatus, preferably' a few theieldto be illuminated il 'Q 's hadowl'ess,'illuminatingth e operating field *stilllitupby the othermirrorsoonsthugao fj 1. m' andan episoopic device projecting the many separate unit sources. fi f. n `of the operation in. progress 'onjto' screen Said apparatusma behookedontosmov- The li'gh g apparatus ie h ooked onto l other type of system in order both to ad movable suspension 'with or l counit in height iu' order to 'cause We in. luter-weight sons to give it .t nnbh mclmltersecton X, Y of the re luminous I tion. "j beams to-coincide with the operatingeld,

The beat radiations of the luminous sour' 4and to incline it to the necessary extent faof s'ad lightingapparatps are cnt of by certain surgical proceedings.' v mell 0f a'pri.lc\llf i dev1. Y Said gpspensionfmgy-be in n f The episcopic system isbroadg the 'ease of Fig; 8, by three `cables 5 Pasing n j by an o jectwe located above e operating over pulleyslLnnd at the end of which'xre table, two reflecti'n surfaces the suspended counter-weights 12 so desid g luminous rays in o er torifght the mage, 0nthat the three. counter-weights 12 shall to s second objectivelocated perpendicularly :noe the'complete apparatus. The ap :s tothe preceding one so as toproject the imago may then be inclined by hand,in n ou to' a screen or ground glass arranged position, preserving its equilibrium while.-

ticaly. 'When the apparatus is in such O er advmtag and nrtxes of the that it cannot readily-be reached byhmd, tho ff invention willbe from the d estr'lp,` device of Fig'. 4 may be utlind, In this :a tion thereof about to be given with reference instance, each of thecables, passes-over two .j 4

- trate diagrammatic lly and by wiy 0f exim? on n drum 15 xed to the inlland rotated ple anembo'diment of the invention. byhan'd bymeausofacrank. 'llieappnntnl In the drawings:V j isiuclined byxnnuningoneo'rmore '1 -f3 33' Fig..1 is'ulongtudnal sectional elevation In ord to obtain ...sucieutly distinct of n n ap aratus according to the invention. image on the screen, it is obvious the Fig. 2 is a similar enlarged view illustrati` operating eld'mustbe strongly illumnnted; ingthe episcopic apparatus in detail. hence Athe luminous ource 1-x`nus he veri 1 f 3 andi are elevatiom illustrating powerful.j Were no device provided for 40 tuoalternative forms of the spension de eliminating the use n temperature at the' I vict.' Y illuminatedspogthehentwouldxnconm Fig.5isaviewin sectionllush'ating' ien the surgeon after-'s few minutes; To the use of c bellows or projection. this end, a. device must bejlsed Wind! rm The shadowless lighting apparatus is con.. let thnoughthe luminous rays and stop outtho s tituted in the present instance vgiven by way heat rays. 5 of example, by :single luminous source 1 In the a'p aratus forming the olnedpftho placedat the focus 'of au annularFr'nel lens invention, is resplt maybe obtained m hm 2'which condenses the luminous rays and didifferent ways. rects them parallelly, after refraction, on' to 1. Through the agency of. a coloured glas 5 a plurality of trapezoidll mirrors 3 located based on iron 'oxide and which has the prop 1.

the a circuf' `lation whi would be produced:

surrolm in theann g2) In stank in whichthevlamp 'would ha c. Y

(c) In the double wallofy allamp specially constituted to effect.- Y

o f-said'solutions may be used alone or sev f '.f "'31 eral combined together. It should however be observedthat the coloured glass has the. .illumination similar advantage of p rovidin to daylight w ereby. e natural coloursof "the'partsof the body are preserved;

,The episcopic eentially' constituted by two lenses 6 and 7 'located at ri h t angles, and two reflecting surfaces 8 an 9 .the.puipose of -whicli'is to vright. the image completely. surfaces are Pferab y i likewiseincliiied to thebisector o the angle formed by the two objectives. A Said ap tus operates as follows-z the vobjective' 6 will provide animage of X at ai. Sai luminous pencil is then reflected on to the reiecting surfaces 8 'and 9 and after passing through the objective 7 producesthe image of atXf. The like ap lies for all the beams so that the image of ,an y end theimage of e y at Y; The apparatus is focussed so that X', Y is thrown on to the screen 10.

l '1. Said screen 10 is placed-onA a wall commonA tothe room of the audience and the operatthe room 11 perceive the` image of the obect on the screen 10 vwhich is transparent.

just been escri the image is completely righted. SupposingX to be for example the nose of the patient and Y his mouth, the auditors will see the object on the screen in its natural position without it being as is the 'caso with episcopic devices in current ual'lhis lillliewisf'exa, lies in a lane perpeii artot ato the patients right and leftside.,l

The reflecting surfaces 8 and 9 may be silvered mirrors, er else by totally re prisms pletely righted.

on the screen 10, there is provi (a) in acircuimioubie-waued glass Sleeve the lamp, the wateiicirculating system posed about said Fresnellens. and adapted to upon the result-aimed-at, onel .of luminous ra proceeding from4 adap Y is reduced at.

ing theatre, so that the students oi'.` auditors--` ith the o tical e iscopic system which has inverted, Y

andcontaming 'constituted in any known manner, ly flat, A.

, l. g in all cases the image will be coin- Inordertoobtainasufticientlysh l dedbellows l, f1' of the type commonly used in photographic 1. In a device ofthe described; the combination ofaluminouaso r. anannular 7l Fresuel condensing'lens uw aboutsaid source, a of'relectmg dis throw a hollow conical beam of light to' supply shadowlem illumination on anoperating table, an episcopic proj device located within said hollow cone o light and i including an objective located above the 2g erating table for proi'ecting-an image of aoperating eratingv eater. 2. In a'device'v of the class described, the combination ofaluminousmann ,l Fresnel condensinglens uw abontsaid source, a system of reflecting mirrors dis- 00. posed: about said Fresnellensand adapted to tliro'iivv av hollow conical beam of lightto suppl shadowless illumination on 811 Operatn ta le) 'an eiseolic projectindevi within ssi ho A ow cone of "ght 'and com prisiiigv a pair of objectives located above the operatingtable normally'to each other and a pair Ao reflecting mirrors with said vo b'ectives,4 said episcopic means being to roiect an imam of the operating l table visib e from outside 'the operating theateri -3. In a device of the class described, the combination of a single luminous source, opti cal 'condensin ,means adapted to condense 1 0. l ht rays lemitted b said source, a system o tinted trapezoid reflectin mirrors 1ocated in spaced relation to sai o cal eondensin means for reflecting .the '"ht'rayl .i. asa holowconicalbeamontoan operating 1l0 I table to produce shadowless illumination thereon, a tinted lass linder located between said opti con ensing means said tem of reflecting mirrors and susroiinding'said optical condensing means, and HQ 'an episcopic projector located within said h ollow conical beam and'inciuding an objective located aboveth'e .operating table for p ro ectmg an im -of the operating tabla visi le from outsi e the operating theater. 1

' annimmt: nmiosrrsshns.

lcrease-the sharpness of dia` phragmfmay be in the ath of the 7U/- uminous rays .before they pass thev '.52' ob'ective.

claim.:

fla." 1 

